svn_diff

Description

This is not a general-purpose diff utility. Only local files
that are versioned may be diffed: other files will fail.

Parameters

path1

First path to diff. This can be a URL to a file/directory in an SVN
repository or a local file/directory path.

Note: Relative paths will be resolved as if the current working directory was the one that contains the PHP binary. To use the calling script's working directory, use realpath() or dirname(__FILE__).

Warning

If a local file path has only backslashes and no forward slashes,
this extension will fail to find the path. Always
replace all backslashes with forward slashes when using this
function.

rev1

First path's revision number. Use SVN_REVISION_HEAD
to specify the most recent revision.

path2

Second path to diff. See path1 for description.

rev2

Second path's revision number. See rev1
for description.

Return Values

Returns an array-list consisting of two streams: the first is the diff output
and the second contains error stream output. The streams can be
read using fread(). Returns FALSE or NULL on
error.

The diff output will, by default, be in the form of Subversion's
custom unified diff format, but an
» external
diff engine may be
used depending on Subversion's configuration.

Notes

Warning

This function is
EXPERIMENTAL. The behaviour of this function, its name, and
surrounding documentation may change without notice in a future release of PHP.
This function should be used at your own risk.

Examples

Example #1 Basic example

This example demonstrates the basic usage of this function, and
the retrieval of contents from the stream: